APA引文

(2001). Tiotropium effective for COPD-study. Philippine Star.

芝加哥风格引文

"Tiotropium Effective for COPD-study." Philippine Star 2001.

MLA引文

"Tiotropium Effective for COPD-study." Philippine Star, 2001.

警告：这些引文格式不一定是100％准确.